Innovator Builds The Better Energy Efficient Window

As much as green technology drives the engine behind much of what we cover, sometimes it is the non-tech ideas that are more efficient and cost effective.  An example of this came in the form of  a venture which started shortly after one Sam Pardue was presented a $40,000 estimate to have his 1906 craftsman-style home’s windows replaced that he started noodling ways to design a more affordable and attractive energy-efficient window.

“Every year around this time I would get really bummed out because the cold air would start flowing in,” Pardue remembers.

image via Indow Window

Then, two years ago, he opened the refrigerator door and inspiration struck. Instead of continuing with the magnetic storm window design that he admitted, “was still ugly”, he came up with a design to use compression tubing that seals around the window, much like you see in a refrigerator door seal.

He developed a prototype and in 2010 and the Indow Window was born. The Indow Window is Pardue’s answer to a better insulated window that is far cheaper than double pane windows and more attractive than unsightly storm or vinyl windows that can detract from unique architectural elements of a home.

The Indow Window is made of acrylic glazing and edged with Pardue’s patent pending compression tubing. The windows are meant for interior use and simply press into place in front of an existing single-pane window.

“Thirty percent of energy in a home is lost through the windows,” Pardue said. “We more than cut that in half.”

In addition to cutting down on drafts, Pardue said his design also doubles the Radiant, or R-Value of a typical single pain window. It also is said to cut down noise coming through the window by 50 percent or more.

Indow Windows is based in Portland, Ore. and manufactures their windows locally. The company has received a $70,000 grant from Oregon Best to calculate the whole home energy savings. The pilot project is being administered by Portland State University’s Green Building Research Laboratory in conjunction with four local utility companies.

The results will come out in the spring of 2012 and will include computer models that show the full home energy savings from the Indow Window.

Kristy Hessman is a writer and native Oregonian who currently resides in California. Before starting her own company, she worked as a reporter covering business and politics for daily newspapers and The Associated Press.

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